Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toi so cong snippets" » "toi bo cong snippets", "toi cao cong snippets", "toi hoc cong snippets", "tai so cong snippets", "noi so cong snippets", "hoi so cong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("toi so cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toi so cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toi so cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toi so cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.